JP2018179347A - Air curtain device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air curtain device which can suppress a maximum value of power used in the device while maintaining the heat radiation performance of the device.SOLUTION: An air curtain device comprises: a heat accumulation processing part 20 for making a conductor 10 accumulate heat by carrying electricity; a heat radial processing part 30 for making the conductor radiate heat by blowing air; a control part 40 for controlling the heat accumulation processing part 20 and the heat radial processing part 30; and a detection part 50 for detecting a moving body. When the detection part 50 detects the moving body in a position at this side rather than a gateway of a building being a position in which a prescribed heat accumulation amount can be accumulated in the conductor 10 by using power having a prescribed value or lower while the moving body progresses up to the gateway of the building, the control part 40 makes the heat accumulation processing part 20 start to accumulate heat in the conductor 10, and when the detection part 50 detects the moving body in the position of the gateway of the building, the control part makes the heat radiation processing part 30 start to radiate heat from the conductor 10 using the prescribed heat accumulation amount.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air curtain device for electric heating.

  For example, Patent Documents 1 to 3 disclose an air curtain device that performs heating and heat shielding by air blowing.

JP, 2016-120988, A JP 2000-171060 A Japanese Patent Application Laid-Open No. 6-174246

  As a heating heat source of the air curtain device, for example, one using steam generated from a boiler is known. While this steam heating air curtain device has the advantage that the thermal energy of steam is large and transport efficiency is good, it also has the disadvantage that it is necessary to lay steam piping from a boiler or that energy efficiency is poor. . For this reason, an air curtain device for electric heating has been proposed which uses a heat exchange coil or the like as a heating heat source.

  However, in order to realize an air curtain device of electric heating, when trying to construct a facility in which large thermal energy of steam is simply converted to electric energy as it is, a distribution facility for supplying power to the air curtain device Etc.) has a large burden.

  For example, energy generated by an air curtain device of steam heating: 116 [kW] is 372 [A] (= 116000 W / (√3 × 200 V × power factor 0.9 × efficiency 1.0) at three-phase AC 200 V voltage Current is required. In this case, for example, only one air curtain device can be connected to the branch breaker of the rated current 600 [A] of the table.

  If multiple devices are connected to the branch breaker of this rated current 600 [A], the current used in the device is limited to less than 300 [A] to keep the maximum power of the air curtain device low. There is a way. However, if the power maximum value is lowered, the heat storage speed of the conductor becomes slow, and the heat radiation performance of the air curtain device is lowered.

  The present invention has been made in view of the above problems, and it is an object of the present invention to provide an air curtain device capable of suppressing the maximum value of the power used in the device to a low value while maintaining the heat dissipation performance of the device. .

  In order to solve the above-mentioned subject, one mode of the present invention is an air curtain device installed in the entrance of a building which a moving body passes, and the thermal storage processing part which stores a conductor by energization and heat dissipation a conductor by ventilation. And a control unit that controls the heat storage processing unit and the heat dissipation processing unit, and a detection unit that detects a moving object, wherein the control unit is located in front of the entrance of the building and is a building When the detecting unit detects the moving body at a position where a predetermined heat storage amount can be stored in the conductor using power less than a predetermined value while the moving body advances to the entrance and exit, the heat storage processing unit stores heat in the conductor When the detection unit detects the movable body at the position of the entrance of the building, the heat release processing unit starts the heat release from the conductor using a predetermined heat storage amount.

  In this one aspect, for example, a predetermined heat storage amount, which is a part of the total heat storage amount required to maintain the heat release performance of the air curtain device, is applied to the conductor of the air curtain device using power less than a predetermined value. The predetermined heat storage amount stored in advance in the conductor is used at the time of heat storage and storage in advance.

  In this control, the power required for the heat storage process (that is, the power equal to or less than a predetermined value) can be lowered by setting the period for storing the predetermined heat storage amount in the conductor long. Also, in this control, by setting a large amount of heat storage, the amount of heat storage that must be added and stored in the conductor in order to obtain the total heat storage in heat dissipation processing decreases, and the air curtain device is used for heat dissipation processing Power consumption can be reduced.

  As a result, the air curtain device of this aspect for performing the pre-storing heat storage on the conductor maintains the same heat dissipation performance as the conventional device that does not perform the pre-storing heat storage on the conductor. It is possible to set lower than the device. Therefore, it is possible to reduce the load on the distribution facility that supplies power to the device, and to reduce, for example, the cost of the distribution facility, the installation space, and the contracted amount of power.

  As described above, according to the air curtain device of the present invention, the maximum value of the power used in the device can be suppressed low while maintaining the heat radiation performance.

The figure which shows schematic structure of the air curtain apparatus which concerns on one Embodiment of this invention. A diagram to explain the change in the positional relationship between the vehicle and the building doorway A diagram to explain the change in the positional relationship between the vehicle and the building doorway A diagram to explain the change in the positional relationship between the vehicle and the building doorway A diagram to explain the change in the positional relationship between the vehicle and the building doorway A diagram for explaining heat storage control performed by an air curtain device according to an embodiment of the present invention The figure which shows the application example of the air curtain apparatus which concerns on one Embodiment of this invention.

[Overview]
The present invention is an air curtain device installed at an entrance of a building through which a vehicle or a person passes. In this air curtain device, the heat storage processing is performed in advance using low power before the heat dissipation processing is performed, and the heat storage processing is dissipated using the amount of heat storage in advance in the heat dissipation processing. As a result, the total heat storage amount required to maintain the heat dissipation performance of the device can be created using low power, so the maximum power value used in the air curtain device can be suppressed.

[Configuration of air curtain device]
FIG. 1 is a view showing a schematic configuration of an air curtain device 1 according to an embodiment of the present invention. The air curtain device 1 of the present embodiment illustrated in FIG. 1 includes the conductor 10, the heat storage processing unit 20, the heat dissipation processing unit 30, the control unit 40, and the detection unit 50. The conductor 10, the heat storage processing unit 20, the heat dissipation processing unit 30, and the control unit 40 form a heating unit that operates based on the detection result of the detection unit 50.

  The conductor 10 is a heat storage body having both a heat storage function capable of storing heat inside and a heat dissipation function (heat exchange function) capable of releasing the stored heat by heat exchange with air. The conductor 10 includes, for example, a main body portion 11 made of metal or the like that generates heat when energized, and a heat radiation fin portion 12 provided on the outer peripheral wall of the main body portion 11 at a predetermined interval. A coil or the like can be used.

  The heat storage processing unit 20 is a current power supply capable of causing an alternating current having a predetermined frequency to flow through the conductor 10. The heat storage processing unit 20 is connected to the conductor 10 by the cable 21 and has a function of causing the conductor 10 to store heat by causing an alternating current to flow (energize) the conductor 10 based on on / off control by the control unit 40. ing.

  The heat dissipation processing unit 30 is an air blowing mechanism that can send out and apply air to the conductor 10. For example, a propeller fan device or the like can be used for the heat dissipation processing unit 30. The heat radiation processing unit 30 has a function of performing heat exchange between the conductor 10 and the air and radiating the heat from the conductor 10 by blowing air to the conductor 10 at a predetermined timing based on on / off control by the control unit 40. doing.

  The control unit 40 can control whether or not the heat storage process is to be performed by causing an alternating current to flow from the heat storage processing unit 20 to the conductor 10 based on the detection result of the detection unit 50. Further, based on the detection result of the detection unit 50, the control unit 40 can control whether or not the heat release processing is performed by blowing air from the heat release processing unit 30 toward the conductor 10.

  The detection unit 50 is a sensor mechanism that can detect the presence of an object. For example, an infrared sensor or the like can be used for the detection unit 50. In a control example to be described later, the detection unit 50 is used to detect that a moving object such as a vehicle or a person (hereinafter referred to as a “moving object”) has reached a predetermined position or has passed a predetermined position. Be done.

[Control of air curtain device]
Next, heat storage control by the air curtain device 1 according to the embodiment of the present invention will be described with further reference to FIGS. 2A, 2B, 2C, 2D, and 3. FIG. Hereinafter, the heat storage control performed by the heating unit of the air curtain device 1 installed at the entrance of the building 3 through which the vehicle 2 passes is executed based on the detection result of the vehicle 2 at the position a and the position b by the detection unit 50 I will list and explain.

  FIGS. 2A, 2B, 2C, and 2D are diagrams for explaining changes in the positional relationship between the vehicle 2 and the detection units 50 (50-1 and 50-2) and the quick shutter 4 at the entrance of the building 3. is there. FIG. 3 is a view for explaining the relationship between electric power (watts) and heat storage amount in heat storage and release control performed by the air curtain device 1 according to the present embodiment. Timings A, B, C, and D in FIG. 3 correspond to positions a, b, c, and d in FIGS. 2A, 2B, 2C, and 2D, respectively.

  The conductor 10 is not energized until the vehicle 2 traveling toward the building 3 reaches the position a, that is, until the detection unit 50-1 detects the vehicle 2 at the position a. Therefore, at this stage, the conductor 10 does not generate heat and is not stored internally (period to the timing A in FIG. 3).

  As shown in FIG. 2A, when the vehicle 2 arrives at a position a in front of the entrance of the building 3 and is detected by the detection unit 50-1, energization of the conductor 10 is started to follow the power P1 of a predetermined value. An alternating current is applied to the conductor 10 (timing A in FIG. 3). Thereby, the heat storage process to the conductor 10 is started.

  Here, the power P1 of a predetermined value can be set arbitrarily, but is appropriately set so that the load on the distribution facility (not shown) for supplying the power P1 to the air curtain device 1 does not increase. Is desirable.

  It is determined that the heat storage amount of the conductor 10 has reached the predetermined heat storage amount Q and the heat storage is completed by the time the next control described later is performed as a result of the heat storage processing on the conductor 10 using the power P1 being continued. In this case, the power consumption is reduced to the power P2 (<P1) capable of maintaining the heat storage amount Q, and the conduction to the conductor 10 is continued (position b in FIG. 2B, FIG. 3 Timing B). The predetermined heat storage amount Q can be, for example, a partial heat storage amount of the total heat storage amount required to maintain the heat release performance of the air curtain device 1.

  The heat storage amount of the conductor 10 may reach the predetermined heat storage amount Q, for example, based on the internal temperature of the conductor 10, or it has elapsed from the start of energization of the conductor 10 (timing A in FIG. 3) It may be judged by time.

  As shown in FIG. 2C, when the vehicle 2 further travels and reaches the position c of the entrance of the building 3 and the quick shutter 4 is opened, that is, when the detection unit 50-2 detects the vehicle 2 at the position c, An alternating current according to the value power P1 is caused to flow in the conductor 10, and the air blowing to the conductor 10 is started (position c in FIG. 2C, timing C in FIG. 3). Thereby, heat exchange between the heat storage amount Q stored in advance in the conductor 10 and the air, that is, heat radiation from the conductor 10 is started. The air warmed by the heat exchange is used, for example, as an air curtain for heat shielding inside the building 3 and heating of the occupant of the vehicle 2.

  The control that is performed when the vehicle 2 is detected at the position c by the detection unit 50-2 is not limited to the energization of the conductor 10 and the blowing of the conductor 10 according to the power P1 described above. For example, control may be such that the conductor 10 is blown while the current is applied to the conductor 10 according to the power P2 lower than the power P1 or only control is performed to stop the current to the conductor 10 and send the current to the conductor 10 It may be

  Then, as shown in FIG. 2D, when the vehicle 2 advances into the building 3 to the position d where the quick shutter 4 at the entrance closes, that is, when the vehicle 2 is not detected by the detection unit 50-2, the conductor 10 is energized. And the air flow is stopped and the heat release process is completed (timing D in FIG. 3).

  In addition, the opportunity which stops electricity supply and the ventilation to the conductor 10 is not restricted only to the vehicle 2 being no longer detected by the detection part 50-2 mentioned above. For example, after the quick shutter 4 is opened, waiting for passage of a predetermined time may automatically stop energization and ventilation of the conductor 10 or a detection unit (not shown) provided in the building 3 By detecting the arrival of the vehicle 2 at the position d in FIG. 2D, the current supply and air flow to the conductor 10 may be automatically stopped.

[Operation and effect in the present embodiment]
According to the above-described air curtain device 1 according to the embodiment of the present invention, the heat storage amount Q, which is a part of the total heat storage amount required to maintain the heat radiation performance of the device The heat storage amount Q stored in the conductor 10 in advance is stored in the conductor 10 in the heat storage processing before heat release, and the heat storage processing is used.

  In this control, as the period for storing the heat storage amount Q in the conductor 10 is set longer, the power P1 necessary for the heat storage process can be lowered. Further, in this control, by setting the heat storage amount Q large, the heat storage amount (= total heat storage amount-heat storage amount Q) that must be additionally stored in the conductor 10 in the heat dissipation process to obtain the total heat storage amount is small. Therefore, the power used by the air curtain device 1 can be suppressed in the heat dissipation process.

  As a result, the present air curtain device 1 performing the prior heat storage to the conductor 10 maintains the same heat radiation performance as the conventional device not performing the prior heat storage to the conductor 10, while the maximum power used by the air curtain device 1 It is possible to set the value lower than the maximum value of the power used by the conventional device. Therefore, the burden on the power distribution facility for supplying power to the air curtain device 1 can be reduced, and for example, the cost of the power distribution facility, the installation space, and the contracted power amount can be reduced.

[Application example]
The air curtain device 1 according to an embodiment of the present invention is not limited to the travel of the vehicle 2 as in the above embodiment, but, for example, as shown in FIG. It can also be applied.

  INDUSTRIAL APPLICABILITY The air curtain device of the present invention can be used as a doorway of a building, etc., and is useful when it is desired to keep the maximum value of the power used in the device low while maintaining the heat radiation performance.

DESCRIPTION OF SYMBOLS 1 Air curtain apparatus 2 Vehicle 3 Building 4 Quick shutter 5 Person 6 Door 10 Conductor 11 Body part 12 Fin part 20 Heat storage processing part 21 Cable 30 Heat dissipation processing part 40 Control part 50 Detection part

Claims (1)

An air curtain device installed at an entrance of a building through which a mobile passes.
A heat storage processing unit that stores a conductor by energization;
A heat release processing unit for releasing the heat of the conductor by air blowing;
A control unit that controls the heat storage processing unit and the heat dissipation processing unit;
And a detection unit for detecting the moving body,
The control unit
The position is located in front of the entrance of the building, and at a position where a predetermined heat storage amount can be stored in the conductor using power less than a predetermined value while the movable body advances to the entrance of the building. When the unit detects the movable body, the heat storage processing unit starts heat storage on the conductor,
When the detection unit detects the movable body at the position of the entrance of the building, the heat release processing unit starts heat release from the conductor using the predetermined heat storage amount.
Air curtain device.